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Official effect

Bass-Blend Overdrive

Low-end-forward soft clipping with a much heavier pre-drive bass shelf than the rest of the overdrive group.

This version keeps the standard single tanh stage and 930 Hz mid boost, but it dramatically increases the low shelf feeding the saturation stage. That means more bass is carried into clipping before the usual post-drive high shelf, giving the current preview its fuller low-end emphasis.

  • Drive, Boost & Saturation
  • Library #22
  • Preview 8s

Waveform preview

Static peaks come from the compiled FAUST preview render. The live scope is drawn from the browser playback output in real time.

Timeline
0:00 / 0:08
Source
Compiled browser preview
Live oscilloscope from the browser playback output.AnalyserNode keeps the signal path unchanged while exposing the waveform.

How It Works

Technical view

This version keeps the standard single tanh stage and 930 Hz mid boost, but it dramatically increases the low shelf feeding the saturation stage. That means more bass is carried into clipping before the usual post-drive high shelf, giving the current preview its fuller low-end emphasis.

  • Drive, Boost & Saturation
  • waveshaping / saturation
  • delay processing
  • oscillator / LFO modulation
  • DC blocking

Signal Path

Compiled preview chain

Preview source: An internally generated picked-string phrase is widened to stereo with a 19-sample right-channel delay and slight left/right shelf-EQ offsets before it reaches the active drive path.

  1. 1internal picked-string demo phrase
  2. 2stereo spread with a short right-channel delay
  3. 3high-pass cleanup
  4. 4heavy low-shelf boost and moderate 930 Hz contour shaping
  5. 5single tanh saturation stage
  6. 6post-drive high-shelf tone shaping
  7. 7dry / wet mix
  8. 8DC blocker
  9. 9output gain trim
  10. 10final tanh limiter

Preview source

An internally generated picked-string phrase is widened to stereo with a 19-sample right-channel delay and slight left/right shelf-EQ offsets before it reaches the active drive path.

Effect core

Single-stage tanh overdrive with exaggerated pre-drive low-shelf support.

Signal path

The static waveform and the live player both reflect this compiled signal chain.

  • internal picked-string demo phrase
  • stereo spread with a short right-channel delay
  • high-pass cleanup
  • heavy low-shelf boost and moderate 930 Hz contour shaping
  • single tanh saturation stage
  • post-drive high-shelf tone shaping
  • dry / wet mix
  • DC blocker
  • output gain trim
  • final tanh limiter

Controls that matter

These are the currently active controls detected in the FAUST source for this effect.

  • mix: Blends the clean stereo preview source with the soft-clipped overdrive path.
  • output_gain_db: Applies final post-effect level trim after the DC blocker.
  • drive: Raises the level feeding the single tanh saturation stage.
  • tone: Controls the post-drive high shelf after saturation.
  • contour: Changes the low shelf and 930 Hz emphasis ahead of clipping.

Code-backed analysis

The generated description is tied to the active helper blocks and routing found in the current DSP.

  • demo
  • fx
  • outputStage
  • leftDemo
  • rightDemo
  • bassBlend
  • phraseMono
  • previewShiftSamples

Controls

Audible controls in this DSP

  • mix

    Active

    Blends the clean stereo preview source with the soft-clipped overdrive path.

    Lower values keep more dry articulation; higher values favor the overdrive voice.

  • output_gain_db

    Active

    Applies final post-effect level trim after the DC blocker.

    Balances loudness without changing how the clipping stage behaves.

  • drive

    Active

    Raises the level feeding the single tanh saturation stage.

    Moves the patch from light breakup toward thicker, more compressed overdrive.

  • tone

    Active

    Controls the post-drive high shelf after saturation.

    Brightens the clipped signal for more edge or smooths it for a darker voice.

  • contour

    Active

    Changes the low shelf and 930 Hz emphasis ahead of clipping.

    Pushes more body or midrange into saturation, changing how focused the overdrive feels.

Analysis

Code-derived notes

Reviewed against the current DSP. This patch is differentiated mainly by how much more low-end is pushed into the same single-stage soft-clip topology.

Active blocks

  • demo
  • fx
  • outputStage
  • leftDemo
  • rightDemo
  • bassBlend
  • phraseMono
  • previewShiftSamples
  • driveTone
  • pickedVoice
  • softsat
  • fund
  • pickEnv
  • ampEnv
  • triggerAt
  • maxDelaySamples

Inactive helpers

  • synthVoice
  • organVoice
  • bellVoice
  • quantize
  • combLP
  • echoOnly
  • diffuser

Warnings

No current warnings are attached to this effect.

Source

  • library/drive-boost-saturation/bass-blend-overdrive.dsp
  • Output stage: DC blocker -> output gain trim -> final tanh limiter
  • Library position: 22

More In Drive, Boost & Saturation

Continue through the library

Each effect page uses the same generated description pipeline and compiled waveform preview assets.

Transparent Overdrive

Keeps the dry attack intact while adding a broad low-mid lift and light tanh saturation for edge-of-breakup push.

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Amp-Like Overdrive

Mid-forward soft clipping tuned to feel more like a pushed amp stage than a flat clean boost.

View How It Works

Hard-Clip Distortion

Cascaded clipping with reinforced lows and upper mids for tighter attack and more modern bite.

View How It Works